Bochum 2018 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 59: Nuclear Astrophysics IV

HK 59.1: Talk

Friday, March 2, 2018, 14:00–14:15, HZO 100

Bound-state beta-decay of bare 205Tl ions at the ESR — •Ragandeep S. Sidhu for the Bare 205Tl experiment at GSI collaboration — GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany

In the present study we aim to determine the bound-state beta-decay rate of fully-ionized 205Tl, which is needed to determine the matrix element for the electron capture decay of the 2.3 keV excited state in 205Pb to the ground state of 205Tl. This matrix element is important for the determination of neutrino capture probability into the 2.3 keV state of 205Pb. In this talk, the production of bare 205Tl81+ from 206Pb beam, it's separation from contaminants, transmission, storage and beam preparation in the ESR, as well as detection of decay events and auxiliary calibration measurements will be discussed. [1]M.K. Pevicevic et al., Nucl. Instr. and Meth. A 621, 282 (2010). [2]J.B. Blake and D.N. Schramm, Astroph. J. 197, 615-629 (1975).